Motion Control

Position Transducer

The Micropulse® Generation 7 linear position transducer line from Balluff (Florence, KY) includes models with SSI Synchronous Serial Interface. Micropulse SSI-output transducers interface with control systems from manufacturers such as Allen-Bradley, Delta Computer, Siemens, Bosch Rexroth, and others. With position resolution to 1 μm, the transducers are suitable for linear positioning and closed-loop control applications.

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Slide

Accuride (Santa Fe Springs, CA) has released the Model 3357, a slide that offers 1" over-travel and a latch disconnect. It carries medium-duty loads up to 150 pounds, and provides full access to storage drawers and trays in industrial workstations and machinery, medical equipment, and electronic enclosures. The slide is available in even lengths of 12" to 30" in a clear zinc finish.

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Rotating Machinery Analysis

Microstar Laboratories (Bellevue, WA) has announced the release of the Rotating Machinery Analysis module with software tools to facilitate mixed time measurements and rotation measurements of rotating machinery. The software enables time-based sampling or encoder-based sampling, or both at the same time. The module processes data captured by a fixed-rate, high-resolution sampling clock with software processing operating at continuously varying rates aligned to pulses from the encoder device. The processing uses DSP technology based on classical sampling theory.

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Thermoplastic Pumps

Hayward Flow Control (Clemmons, NC) has released the T-Series Webster thermoplastic pumps. The vertical, seal-less, immersible pumps feature a single, non-coupled motor/impeller shaft with a proprietary shaft seal. The pumps are available from 1/3 HP to 1-1/2 HP, with standard and washdown motors, and in voltages of 115/230 and 208-230/460. Other features include 303 stainless steel shaft material and an extended shaft sleeve. Options include GFPP or PVDF pump head and impeller assembly, inlet screen, in-tank filtration, impeller trim variations, explosion-proof motors, 575V motors, and S-J type electrical cord.

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Motorized Microscope Stage

PI, L.P. (Auburn, MA) has introduced the M-687 motorized microscope XY stage for inverted microscopes that features fully integrated, miniaturized ceramic linear drives. The stage is delivered as a complete system including a controller, joystick, and software. The self-clamping ceramic/ceramic linear motors in the XY positioner provide positional stability. No energy is consumed to hold position (no heat dissipation); there are no leadscrews to heat up due to friction during motion and cause drift, cooling down once the motion stops; and there is no creep caused by lubricant flow in the drive mechanism.

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Accelerometer

Dytran Instruments (Chatsworth, CA) has introduced the Model 3225M39 ultraminiature teardrop IEPE accelerometer with a sensitivity of 10 mV/g, designed to adhesively mount in spaces typically inaccessible to other types of accelerometers. The sensor has an overall height of 0.23" (5.8 mm), and weighs 0.95 grams. Featuring a quartz shear sensing element in a titanium housing, the accelerometer utilizes an integral three-foot coaxial cable assembly terminating to a 10-32 jack. It incorporates low-noise electronics, and has a frequency response of 1.2 to 10,000 Hz, making it suitable for modal analysis and Environmental Stress Screening (ESS) applications.

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Rotary Stages

Aerotech (Pittsburgh, PA) offers the CCS series rotary stages with integrated captured collet chucks that provide automated material handling for a wide range of materials and applications. Collet chucks used with the stages accept C-, D-, or Levin-style collets from machine-tool component suppliers in sizes supporting tube diameters from 0.1 mm to 27 mm. The stages feature a collet-chuck design that allows workpiece advance without manual realignment to compensate for axial tube motion during clamp/unclamp cycles. By moving the taper around the collet instead of drawing the collet into the taper, axial motion of the workpiece is significantly reduced, eliminating the need for part reregistration after tube advancement. The stages use direct-drive brushless motor technology that is optimized for 24/7 production environments, with no brushes and no gear trains or belts.

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